I have a 2300 that I use primarily as a whitetail stand pack and really like it.
1800 gets pretty tight if you're trying to fit warm outer layers inside with your snacks, hats, gloves, etc. If you're fine with strapping warm layers to the outside it'll be fine.
Have you seen the Encounter Divide 2800 that has the removable pockets? That's designed specifically for stand hunting and it shows. It's a newer model. If my 2300 ever blows out I'll upgrade.